P Pulmonale

ECG findings in which the P wave amplitude in leads II, III and/or aVF is greater than 2.5 mm.

An abnormal pattern seen on an electrocardiogram, associated with diffuse lung disease and acute pulmonary embolism; it consists of tall peaked P waves in the inferior leads and P axis to the right of + 70°.

Reflects right atrial overload (right heart strain) and is a marker of disease processes that involve stress to the right heart circulation.

Correlation with echocardiographic findings is poor and ECG patterns of right axis deviation, S1S2S3, S1Q3 and P wave axis are more sensitive indicators of right heart strain.

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